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The following needs to be done in order to implement a custom statistics observer.

  • To disable operation of publishing statistics via the ESB Analytics server by setting the AnalyticPublishingDisable property in the <EI_HOME>/conf/carbon.xml file to true as shown below.

    <MediationFlowStatisticConfig>
<AnalyticPublishingDisable>true</AnalyticPublishingDisable>
</MediationFlowStatisticConfig>

    This is useful when you want to collect statistics using a product other than ESB Analytics. In such scenarios, preventing the ESB Analytics server from publishing statistics allows you to avoid incurring an unnecessary system overhead.
     

  • Create the JAR file with the that contains the required statistics observer implementation, and copy it to the <EI_HOME>/lib directory. This implementation should have the following.
    • The org.wso2.carbon.das.messageflow.data.publisher.observer.MessageFlowObserver interface.
    • If the observer is tenant aware, it should also implement org.wso2.carbon.das.messageflow.data.publisher.observer.TenantInformation.
       

  • Add all the observers as a comma separated list in the <EI_HOME>/conf/carbon.xml file as shown in the example below.

    <MediationFlowStatisticConfig>
<Observers>
    org.wso2.custom.Observer1,org.wso2.custom.Observer2
</Observers>
</MediationFlowStatisticConfig>
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